[valachio]

I agree that if I end up not liking him (as a person) at all, then it won't work out.

I was planning on setting up like a 3-month part-time working relationship where we can work together on some side project to get to know each other better.

A 3-month work commitment is not much, plus if I go into it and 1-month later I decide things dont work out, I can just leave.

But I'm wondering if it's worth investing time for this 3-month work arrangement at all

[geocrasher]

Honestly from what you're saying, I'd pass. Time is too precious. I mean, if you think you might have a Jamie and Adam type of relationship (mythbusters) where you don't always see eye to eye but you always do amazing work together, that's great. But if you don't see that now, and have that professional respect already, then I dunno.

Have you discussed this with him? And if not, why not? You'll be tackling much bigger issues together in the future, so tackle this one. What does he think? It might be as simple as saying "You know, we have a lot in common and I think we could work together, but our personalities just don't seem to click. I'm concerned about working together long term. What do you think?"